Transporters of arsenite in rice and their role in arsenic accumulation in rice grain
Okayama University · Okayama Prefectural Kurashiki Chuo High School · +1 more institution
Abstract
Arsenic poisoning affects millions of people worldwide. Human arsenic intake from rice consumption can be substantial because rice is particularly efficient in assimilating arsenic from paddy soils, although the mechanism has not been elucidated. Here we report that two different types of transporters mediate transport of arsenite, the predominant form of arsenic in paddy soil, from the external medium to the xylem. Transporters belonging to the NIP subfamily of aquaporins in rice are permeable to arsenite but not to arsenate. Mutation in OsNIP2;1 (Lsi1, a silicon influx transporter) significantly decreases arsenite uptake. Furthermore, in the rice mutants defective in the silicon efflux transporter Lsi2,…
Citation impact
- FWCI
- 40.88
- Percentile
- 100%
- References
- 34
Authors
7- JFJian FengCorresponding
Okayama University, Okayama Prefectural Kurashiki Chuo High School
- NYNaoki Yamaji
Okayama University, Okayama Prefectural Kurashiki Chuo High School
- NMNamiki Mitani
Okayama University, Okayama Prefectural Kurashiki Chuo High School
- XXXiaoyan Xu
Okayama University, Rothamsted Research
- YSYuhong Su
Rothamsted Research
Topics & keywords
- Arsenite
- Arsenic
- Xylem
- Shoot
- Oryza sativa
- Arsenate
- Arsenic toxicity
- Chemistry
- Zero hunger